Coating machine



Dec. 9, 1930. I M; 'r. CHAMBERLAIN 1,783,955

COATING MACHINE Filed Nov. 30, 192s Bnncntot WET/w T 611/?5551. 57/) 7 ci/EWZZ Gttomeg about Within the interior ofthe drum int-he presence of the plastic cement, or binder.

The shaft 14, which passesthrough thev belt and pulley 18, itbeing understood that the drum'and the rotary fork turn in the} same direction, fas indicated: in Figufe 2.f

The tines of the rotary fork repeatedlytoss' the fibers about in the druinin the presence of the binder, and the rotation 'o'f theklruin' continuously "carries the fibrous mass to the rotary fork. The discharge gate 9 of course remains closed While the material "is being fed to the drum and While the druni'is revolv- I 'mentasrap1dly aslt forms onthe inner face ing'and the-agitator'or fork is turning. V y

Assho Wn i Figure 2 the fibrous and binder occupybut acomparatively mall space in the'druni, while the'remaind'er of the space enables the forks totoss the material about iii the drum within the limits indicated V by t'he dot andrdash, line, themateria'l always coming'backt'obepicked up byithetforkst AsZ-the drum rotates andcarris-thenia 'terial totthe revolvingtforli, the latter picks "uputhe mass, repeatedly tosses and throws off 1 ,tlre iibers,'.separatingthem,and' causingthem. a to rub'oneagainstanother,to insurefan'inc ivi'dual softening; of the fibers that permits permeation ;of the fiberlbyihfe binder,- and at 1 'addition'a-n evendistributionof:theqgilastic V p I d-ru nr0tates,",until the coated and tangled cement orbi-nderon allpalrts oft-thelfibersis m er the fibers; i

, aboi'it in the-drum, a small qu antitymf the plastic cemenuor binder 'is evenly and :uni-- ,fornily distributed over the entire i area of allot t hefibers, the degree of permeationfofz the fibers by the binder-depending 'upon'the Asthemixtureofefibersand 7 length of time forthepassage of the material through the rotating: drum. The fibrous" mixtureis'picked up'by theprongs or t-ines of the rotaryfork,i or the mixture .niay-beicarcoating orl binde i i v In this process/0f m x ngthe'. binder and the inner "face of the drum, are inclined to, or

fried-on the inner face of the wallet t-h'e rotating drum, dropped therefrom,- 'andagain tossed by the fines of the rotaryi'fork; as the:

fibers, fibersfa's they are thrown against li-ave aten jdency to, sticklt o the Wall, and :the binder'or plastic cement is'also likelyto, stickto the Wall, necessitatingfthe employment of.

means for scraping thef-materiaFfrom the drum before itcan accumulate in isufiicient quantity toreta-rd theeflici'ency of'thecoating machine. For this-purpose ascraper blade or plate 19 is used, "having a scraper faceQO,

curved as sh'oivn and' having aFresi-lient'bear ingagains't th'efinn'er faceio'f the drum-Wal-l, s The scraper plate or blade is attached tot-a scraper bar 21 that extends parallel with the wall-of thednu1n and-is locatedsin' the upper material c at an acuteangle to the" Wall it touches pep acoomp1ishe d,:togetherwith a uniform lc'oat, i v t a t i i 1 r openlng cmadeby the lifting of the gate 9,}

"tlfeatingQthe, materials I use apredeter-. mined amount and-proportion of-fiber and rotary fork revolve in the r is apnliiedfbyattrition to" V givenweightand volume, o r11n%a continuous material eemmmgkd with the plastic-binder or liquid binder. Ordinarily in;:thecourse of mixing, and discharging the coated upwardly, as-at 23, andinovable in aguide sleeve 2% provided; therefor and supported fromithering l3-or'lotherfixed support. The 7 scraper bar is supported and the scraper resili nt-11:65am,as for instance a. spring 25 wh ch is anc-hored at one end to the scraper lbariri'and p nded at its other end from a Vbra'cketQG p v Thus the scraper blade removes the cejblade -isiheld in Working position with rela- H a i tion to :the inner face of the drum Wallaby of the the position of lthe scraper, V

Inits someof the f fiber to; accumu-late I on the p iate t h aft w r lme edfb t r t resihently pressed edge of the' scraper -blade and the -;wa1l 'by,the revolvingfldrumin Order t at hea eum l -ed e e ti a-yb u bd nto the fibers. These fibers ithithe cement v a l l .1 terial thatis-belng tossed: about by the rotary;

coatirigtherfifall back into'the massof mafork, andithe 'coatedjfibers' finally reach the i h g; ndfb th d um for e it when h e e 1 pe d- The, drumi p d o agitudinallylas shoivn to perinit the material to be carried towardzthe-dischargeend as the fiberseventlla ly are discharged through the;

binder, a suflicient quantity of theflatter: beg f c sileft W nt-h re y onem z ns inth use of the binder and avoiding aste of the binder isjdistributed overa maximum (the entire) surface of the'fibersas the drum and l i d r c i b t.

atd-ifferentjspeeds. J

The feed of {the'eernent or binder into the ,clrum,-fand also the; feeding; of the fiber to 1 the. drum,. may be;performedin batches of -Col-ori ng{matter form m'ay be, added to'ithe' cement, or to the mass in the drum, :for the PHFPQ Q :Of paintingor stain-V inythe fibers the ;desired c'o'lor,; and in some instances non-fibrous materials may also be, mixed'with the fiber and binder. i I--ma ia1so introduce short fibers ofpther fibers, I revolve the and beater shaft; in theisame direction, however, I may oscillate the-drum back a ind fiorthi'on its.axis ,.es1-;

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